zpool import - cannot import: one or more devices is currently unavailable

Question

I have moved a ZFS pool from one SunFire server running some pre-release of Solaris 11 to another server running latest Solaris 10 and now can't import it. It was properly zfs export from the old one. At the same time I migrated one another zpool (extpool2) and it imported just fine. Here is what I get on the new server:

root@kria ~ # zpool import
  pool: extpool
    id: 8401594403030600070
 state: ONLINE
status: The pool is formatted using an older on-disk version.
action: The pool can be imported using its name or numeric identifier, though
        some features will not be available without an explicit 'zpool upgrade'.
config:

        extpool      ONLINE
          raidz1-0   ONLINE
            c2t8d0   ONLINE
            c2t10d0  ONLINE
            c2t12d0  ONLINE
            c2t14d0  ONLINE

root@kria ~ # zpool import -f extpool
cannot import 'extpool': one or more devices is currently unavailable

But they are available - all 4 are online, /dev/ entries are there and they show up in format device list. The extpool zfs version is 31 (I checked that before moving it) and the host supports at least ver 32 (checked its rpool version).

I also did zdb -l and got this failure:

root@kria ~ # zdb -l /dev/dsk/c2t8d0
------------------------------------------
LABEL 0
------------------------------------------
------------------------------------------
LABEL 1
------------------------------------------
failed to unpack label 1
------------------------------------------
LABEL 2
------------------------------------------
------------------------------------------
LABEL 3 - CONFIG MATCHES LABEL 2
------------------------------------------

Any idea what to do?

Answer 1

显然，Solaris 11 和 Solaris 10 - ZFS 加密和 ZFS 重复数据删除之间不兼容。尽管 Solaris 11 上的 ZFS 版本 31 和 21 分别支持它们，但 Solaris 10 根本不支持它们，即使它最高支持版本 32 :(

提示：zpool upgrade -v查看支持的功能列表。